Rim tool



BEST AVAILABLE Com Nov. 2 1926,

M. T. PETERSON RIM TOOL Fi led Dec. 2. 1925 'CL nay.

Patented Nov. 2, 1926.

UNITED STATES BEST AVAILABLE .COP\

MARTIN T. PETERSON, OF BELMONT, MASSACHUSETTS.

RIM TOOL.

Application filed December 2, 1925. Serial No. 72,822.

This invention has for its object the construction of asimplified,inexpensive and efii-' cient tool for contracting and expanding splitrims of automobile tires.

In carrying my invention into effect I provide two telescopicallydisposed tubes with push'and pull jaws at their opposite ends, and ahand lever for forcibly moving them with respect to each other.

In the drawings forming part of this specification, Fig. 1 is a sideview of a rim tool embodying my invention, the same being shown in itsexpanding condition. Fig. 2 is a similar view showing it in itscontracting condition. Fig. 3 is a cross section on the line 33 in Fig.1.

The rod or tube 1 is telescopically slidable within the tubular member2, and each is formed with a hook 3 for contracting the rim, and apushing shoulder 4 for expanding the same.

Around the end of the tube 2 opposite its end 3, 4 is fastened a collar5, and to the latter is pivoted at 6 an operating handle 7. Slidableupon the'rod 1 is a collar 9 carrying a double-edged pawl 10; the handle7 being connected with the collar 9 by means of two bars 11 pivotedthereto at 12 and 13. It should be observed that the pivotal point 13 isoffset with respect to the handle 7, so that when the latter has swungdown to its nearest approach to the tube 2, the pivot 13 will be belowthe level of the pivot 6, and is thereby locked against any possiblestrength of pull upon the collar 9 away from the tube 2.

Upon the top surface of the rod 1 is cut a series of square teeth letadapted to be engaged by the pawl 10; and along one side of the rod is agroove 15 which, by means of a pin 16 projecting into it from the tube2, keeps the rod 1 from turning in the tube 2; and, by having thisgroove closed near its inner end, the pin prevents the rod from beingentirely withdrawn from the tube.

For contracting a rim, the pawl is thrown over into the position shownin Fig. 2, and the hooks 3 caught upon the edge of the rim, with thehandle swung over toward the rod 1. The pawl being in engagement with atooth 14, the handle is forced over to the position illustrated in Fig.1, with the pivot 13 below the pivot 6; thus contracting the rim to therequired extent. Thus locked in position, the tool and contracted rimcan be freely handled Without danger of the tools releasing the rim.

For expanding the rim, the handle 7 is in the position shown in Fig. 1,and the pawl 10 likewise. Then the push shoulders t are brought againstthe rim, and the handle is forced over until the desired result isaccomplished.

The part 1 may be solid or tubular, but I prefer the latter for the sakeof lightness and strength. I also prefer to have the parts 1 and 2tubular because of the ease thereby given for the formation of the parts3 and 4:; since all I need to do is to Split the ends of the tubesthereat; cut off the excess and bend slightly to make the push shoulder4; and to suitably bend the other part into a hook 3.

What I claim as my invention is:

1. A rim tool comprising two telescopically disposed members having pushand pull elements at their extremities, a lever handle pivoted to onethereof, a collar slidable upon the other member, bars pivoted to saidcollar and handle, and a reversible pawl pivoted to said collar, themember having the collar being provided with square teeth for theengagement of said pawl.

2. A rim tool comprising two tubes, one slidable within the other andeach having a push and pull element at its farther end, the smaller tubehaving a series of teeth along its upper surface and a collar slidabletherealong, the larger tube having a lever handle pivoted thereto, barspivoted to said collar and to said handle at an offset point, and areversible pawl carried by said collar for engagement with said teeth,the smaller tube having a longitudinal groove, and the larger tubehaving a pin reaching into said groove, both for preventing the entireseparation of the tubes and their relative rotation.

In testimony that I claim the foregoing invention, I have hereunto setmy hand this 1st day of December, 1925.

MARTIN T. PETERSON.

